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dc.contributor.authorMarriott, R.
dc.contributor.authorAdams, D.
dc.contributor.authorJarvis, N.
dc.contributor.authorMoran, M.
dc.contributor.authorNewman, Stephen
dc.contributor.authorCraine, M.
dc.date.accessioned2017-04-28T13:58:28Z
dc.date.available2017-04-28T13:58:28Z
dc.date.created2017-04-28T09:06:16Z
dc.date.issued2011
dc.identifier.citationMarriott, R. and Adams, D. and Jarvis, N. and Moran, M. and Newman, S. and Craine, M. 2011. Age-based demographic assessment of fished stocks of Lethrinus nebulosus in the Gascoyne Bioregion of Western Australia. Fisheries Management and Ecology. 18 (2): pp. 89-103.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/52329
dc.identifier.doi10.1111/j.1365-2400.2010.00754.x
dc.description.abstract

Age-based demographic analyses were undertaken to assess the current status of fished stocks of spangled emperor, Lethrinus nebulosus (Forsskål) in the Gascoyne Bioregion of Western Australia. Differences in age and growth characteristics were detected for samples collected from different assessment zones, with North Gascoyne fish observed to grow faster and reach a shorter average maximum length and younger average age than South Gascoyne fish. A significant difference in North Gascoyne catch-at-age data from different time periods demonstrated historical effects of fishing on population age structure. Instantaneous rates of fishing mortality (F) from catch-curve analyses of age-frequency data sampled for the North Gascoyne stock from recreational fishing catches from April 2007 to March 2008 were beyond the limit reference point compared with estimated instantaneous rates of natural mortality (M) (i.e. F>1.5M), indicating that there is currently a risk to the sustainability of that stock. © 2010 Department of Fisheries, Government of Western Australia.

dc.publisherWiley-Blackwell Publishing Ltd.
dc.titleAge-based demographic assessment of fished stocks of Lethrinus nebulosus in the Gascoyne Bioregion of Western Australia
dc.typeJournal Article
dcterms.source.volume18
dcterms.source.number2
dcterms.source.startPage89
dcterms.source.endPage103
dcterms.source.issn0969-997X
dcterms.source.titleFisheries Management and Ecology
curtin.departmentDepartment of Environment and Agriculture
curtin.accessStatusFulltext not available


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